I have web apps installed the same way as Glide Apps, “add to home screen” method.
Apparently if you use a template method of "webapp://[your app's URL, same as what you added to home screen as bookmark", then it will open said installed web app on iOS.
This is an amazing find! This will be great for callbacks for when the user is taken outside of the app and wants to be navigated back. I imagine if the app is not installed on the home screen, then it does nothing, though?
Also, is this only for iOS 26 or does this currently work on earlier versions? What about android users? How could we build a solution that caters to them too?
No. Android does not support webapp://.
However, you could implement a custom deep link scheme via:
WebAPK + intent filters
Or use intent:// links (limited, messy)
This has been a feature with Android for several years. Clicking on a link to my app from a website will open the installed version of the app. No need for a special url. It just does it automatically.